CN111333264A

CN111333264A - Sewage treatment system

Info

Publication number: CN111333264A
Application number: CN202010156779.1A
Authority: CN
Inventors: 王月普; 王楠
Original assignee: Xinji Xiangguang Flannelette Co ltd
Current assignee: Xinji Xiangguang Flannelette Co ltd
Priority date: 2020-03-09
Filing date: 2020-03-09
Publication date: 2020-06-26

Abstract

The invention relates to a sewage treatment system, which comprises a tank body and a partition plate vertically arranged in the tank body, wherein the partition plate divides the space in the tank body into a hydrolysis acidification area and an oxidation area, and the oxidation area is divided into an anaerobic area and an aerobic area from bottom to top. A plurality of first clapboards are arranged in the hydrolysis acidification area from top to bottom at intervals, a first packing layer is arranged below each first clapboard, and the density of the first packing layer is smaller than that of liquid in the tank body. A second clapboard is arranged in the anaerobic zone, a second filler layer is arranged under the second clapboard, and the density of the second filler layer is greater than that of the liquid in the tank body. The tank body is also internally provided with an air distributor which is positioned in the aerobic zone and used for conveying air to the aerobic zone. The hydrolysis acidification zone is communicated with the anaerobic zone, liquid in the hydrolysis acidification zone flows from top to bottom, and liquid in the oxidation zone flows from bottom to top. The invention is used for treating wastewater generated in the production process of flannelette, and has the characteristics of small occupied area and low operation cost.

Description

Sewage treatment system

Technical Field

The invention relates to the technical field of sewage treatment, in particular to a sewage treatment system.

Background

The napped fabric is a cotton fabric with a smooth and fluffy surface after napping, more fluff is generated through a pinhole napping process on the surface of the fabric, and the fabric is strong in stereoscopic impression, high in glossiness and soft and thick to touch. The production of flannelette needs a plurality of procedures such as dyeing, shearing and washing, so a large amount of waste water is generated, and the waste water contains dye and fluff, which is difficult to treat.

Most of the existing treatment processes are that a large number of sedimentation tanks, acidification tanks, oxidation tanks and the like are built in a plant area, the occupied area is large, the construction cost is high, especially, waste water needs to flow among the tanks, and the overall operation cost is higher.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a sewage treatment system which is lower in construction and operation cost and can effectively reduce the sewage treatment cost.

The above object of the present invention is achieved by the following technical solutions:

a wastewater treatment system comprising:

a tank body;

the partition board is vertically arranged in the tank body, and divides the space in the tank body into a hydrolysis acidification area and an oxidation area, and the oxidation area is divided into an anaerobic area and an aerobic area from bottom to top;

the first partition plates are arranged on the inner wall of the tank body from top to bottom at intervals and are positioned in the hydrolysis acidification zone;

the first filler layer is arranged right below the first partition plate, and the density of the first filler layer is less than that of liquid in the tank body;

the second partition plate is arranged on the inner wall of the tank body and is positioned in the anaerobic zone;

the second filler layer is arranged right below the second partition plate, and the density of the second filler layer is greater than that of the liquid in the tank body;

the air distributor is arranged in the tank body, is positioned in the aerobic zone and is used for conveying air into the aerobic zone; and

the drain pipe is arranged in the tank body and communicated with the aerobic zone;

wherein, the hydrolysis acidification zone is communicated with the anaerobic zone, the liquid in the hydrolysis acidification zone flows from top to bottom, and the liquid in the oxidation zone flows from bottom to top.

Through adopting above-mentioned technical scheme, the jar body can directly place subaerial, and construction cost is lower to can make full use of the space above the ground, area is also littleer. In the treatment process, the wastewater to be treated flows through the hydrolysis acidification zone, the aerobic zone and the anaerobic zone in sequence, the water in the hydrolysis acidification zone can automatically flow through the aerobic zone and the anaerobic zone under the action of gravity, a water pump is not needed for transportation, and the operation cost can be effectively reduced.

The invention is further configured to: the bottom surface of the hydrolysis acidification zone is positioned above the bottom surface of the anaerobic zone;

the second filler layer is positioned below the bottom surface of the hydrolytic acidification zone.

By adopting the technical scheme, the water which is hydrolyzed and acidified can completely flow into the anaerobic zone, and the condition that the water is retained in the hydrolysis and acidification zone and cannot be subjected to subsequent treatment can not occur.

The invention is further configured to: the anaerobic reactor also comprises a water distributor arranged in the anaerobic zone;

the water distributor comprises a main pipeline connected with the partition plate, branch pipelines symmetrically arranged at two sides of the main pipeline and water distribution holes uniformly distributed on the branch pipelines;

the main pipeline and the branch pipeline are positioned between the second packing layer and the gas distributor.

Through adopting above-mentioned technical scheme, the water-locator can make the even second packing layer that flows into below the anaerobic zone of waste water through hydrolysis acidification, improves the homogeneity that waste water distributes to further improve the treatment effeciency of waste water.

The invention is further configured to: the water distribution holes face the second packing layer.

Through adopting above-mentioned technical scheme, impurity and granule etc. in can avoiding the waste water are blockked up the water distribution hole.

The invention is further configured to: a third partition plate is arranged on the inner wall of the tank body, and is positioned in the aerobic zone and above the gas distributor;

and a third packing layer is arranged below the third partition plate, and the density of the third packing layer is less than that of the liquid in the tank body.

By adopting the technical scheme, the third packing layer can provide a carrier for the bacteria for oxidation, so that the bacteria can stably exist in the aerobic zone and cannot flow out of the tank body along with flowing sewage.

The invention is further configured to: the secondary gas distributor is used for injecting ozone into the aerobic zone;

the secondary air distributor comprises a bracket arranged on the inner wall of the tank body and an aeration pipe coiled on the bracket;

and the secondary air distributor is positioned above the third partition plate.

By adopting the technical scheme, the ozone has strong oxidizing property, can decolorize and sterilize the sewage, can also play a role in reducing the chemical oxygen demand and can further improve the water quality of the wastewater.

The invention is further configured to: also comprises a drain pipe connected with the bottom surface of the hydrolysis acidification zone and a drain valve arranged on the drain pipe.

Through adopting above-mentioned technical scheme, the blow off pipe can release the mud that deposits on hydrolysis-acidification zone bottom surface, avoids piling up the normal flow that excessively influences sewage, can also avoid mud to block up the water-locator simultaneously.

The invention is further configured to: the middle of the bottom surface of the hydrolytic acidification zone is low, and the periphery of the bottom surface of the hydrolytic acidification zone is high;

the communicating position of the sewage discharge pipe and the bottom surface of the hydrolysis acidification area is positioned at the lowest position of the bottom surface.

Through adopting above-mentioned technical scheme, can make the mud that deposits on hydrolysis-acidification zone bottom surface flow to the center department of bottom surface, then discharge from the blowdown pipe, the unable discharged condition of mud at the edge can not appear.

The invention is further configured to further include:

the sewage tank is arranged on the top surface of the tank body and is communicated with the hydrolysis acidification zone;

the grid is obliquely arranged in the sewage tank and is connected with the inner wall and the bottom surface of the sewage tank; and

barbs are uniformly distributed on the upper surface of the grid mesh.

Through adopting above-mentioned technical scheme, the barb on the graticule mesh can filter out the fine hair in sewage, reduces the processing load of follow-up hydrolytic acidification, anaerobic oxidation and aerobic oxidation.

The invention is further configured to: the top of the barb inclines to the higher side of the grid.

Through adopting above-mentioned technical scheme, can avoid mobile sewage to go up fine hair from the barb and get off, can further improve the interception effect of graticule mesh.

In conclusion, the beneficial technical effects of the invention are as follows:

1. the tank body can be directly placed on the ground, so that the construction cost is lower, the space above the ground can be fully utilized, and the occupied area is smaller. In the treatment process, the wastewater to be treated flows through the hydrolysis acidification zone, the aerobic zone and the anaerobic zone in sequence, the water in the hydrolysis acidification zone can automatically flow through the aerobic zone and the anaerobic zone under the action of gravity, a water pump is not needed for transportation, and the operation cost can be effectively reduced.

2. The water distributor can make the wastewater after hydrolytic acidification evenly flow into the second packing layer below the anaerobic zone, so that the uniformity of wastewater distribution is improved, and the treatment efficiency of the wastewater is further improved.

3. The secondary gas distributor can inject ozone into the tank body, the ozone has strong oxidizing property, can decolor and sterilize sewage, can also play a role in reducing chemical oxygen demand, and can further improve the water quality of wastewater.

4. The sewage discharge pipe can release the sludge precipitated on the bottom surface of the hydrolysis acidification zone, so that the accumulation of excessive sludge to influence the normal flow of sewage is avoided, and the blockage of the water distributor by the sludge can be avoided, so that the sewage in the tank body can flow normally.

5. The barb on the graticule mesh can filter out the fine hair in sewage, reduces the processing load of follow-up hydrolytic acidification, anaerobic oxidation and aerobic oxidation.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the present invention.

Fig. 2 is a schematic diagram of the internal structure given based on fig. 1.

Fig. 3 is a schematic view of a bottom structure of a can body according to an embodiment of the present invention.

Fig. 4 is a partially enlarged schematic view of a portion a in fig. 1.

In the figure, 11, a tank body, 12, a partition board, 13, a hydrolysis acidification area, 14, an oxidation area, 141, an anaerobic area, 142, an aerobic area, 21, a first partition board, 22, a first packing layer, 23, a second partition board, 24, a second packing layer, 25, an air distributor, 26, a drain pipe, 27, a third partition board, 28, a third packing layer, 3, a water distributor, 31, a main pipeline, 32, a branch pipeline, 33, a water distribution hole, 4, a secondary air distributor, 41, a support, 42, an aeration pipe, 51, a sewage discharge pipe, 52, a sewage discharge valve, 61, a sewage pool, 62, a grid, 63 and barbs.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, a sewage treatment system according to an embodiment of the present invention is disclosed, in which a main body of the sewage treatment system is a tank 11, and the tank 11 has a cylindrical shape and is directly placed on the ground.

The partition plate 12 is vertically fixed in the tank 11, and the side surfaces thereof are respectively connected with the side wall, the top surface and the bottom surface of the tank 11, so as to divide the tank 11 into two independent parts, namely a hydrolysis acidification zone 13 and an oxidation zone 14, which are communicated with each other near the bottom surface of the tank 11, so that sewage in the hydrolysis acidification zone 13 can flow into the oxidation zone 14.

The oxidation zone 14 is divided into an anaerobic zone 141 and an aerobic zone 142, the anaerobic zone 141 is positioned below the aerobic zone 142, and sewage flows out of the hydrolysis acidification zone 13, firstly enters the anaerobic zone 141, then enters the aerobic zone 142, and finally flows out of the tank body 11.

A plurality of first partition plates 21 are arranged in the hydrolysis acidification zone 13 at intervals from top to bottom, the first partition plates 21 are fixed on the inner wall of the tank body 11, and the distances between the adjacent first partition plates 21 can be equal or different. A first packing layer 22 is arranged below each first partition plate 21, and the density of the first packing layer 22 is smaller than that of liquid in the tank body 11, so that when sewage in the hydrolysis acidification zone 13 flows up and down, the first packing layer 22 can float below the first partition plate 21 under the action of buoyancy to provide a bacterial bed for bacteria for hydrolysis acidification.

A second partition 23 is also provided in the anaerobic zone 141, and the second partition 23 is also fixed to the inner wall of the tank 11. A second packing layer 24 is arranged below the second separator 23, and the density of the second packing layer 24 is larger than that of the liquid in the tank body 11. Thus, when the wastewater flowing from the hydrolysis acidification zone 13 flows in the anaerobic zone 14, the second packing layer 24 is not washed up, and even if part of the packing in the second packing layer 24 flows with the wastewater, the wastewater finally sinks to the bottom of the anaerobic zone 141.

An air distributor 25 is installed in the aerobic zone 142, and the air distributor 25 is used for delivering air into the aerobic zone 142, so that sufficient oxygen is available in the aerobic zone 142 for aerobic bacteria.

The side wall of the tank 11 is further provided with a drain pipe 26, and the drain pipe 26 is communicated with the aerobic zone 142 and is used for guiding the treated wastewater out of the tank 11.

During treatment, the wastewater first flows into the hydrolysis acidification zone 13. The sewage in the hydrolysis acidification zone 13 flows from top to bottom and sequentially passes through each first packing layer 22. When sewage flows through first packing layer 22, the bacterium of attached to on first packing layer 22 can carry out the first time to sewage, and the used hydrolytic bacterium of hydrolytic acidification and acidizing fungus hydrolyze the aquatic insoluble organic matter for the dissolubility organic matter, turns into the process of the easy biodegradable little molecular substance with difficult biodegradable's macromolecular substance to improve the biodegradability of waste water, provide good quality of water environment for follow-up biochemical treatment.

The sewage in the hydrolysis acidification zone 13 flows into the anaerobic zone 141 after passing through the partition plate 12, and anaerobic bacteria attached to the second packing layer 24 carry out anaerobic treatment on the wastewater. The anaerobically treated wastewater flows upward to the aerobic zone 142 for aerobic treatment and is finally discharged through the drain 26.

The hydrolysis acidification zone 13 and the anaerobic zone 141 are communicated through the partition plate 12, and in order to enable all the sewage in the hydrolysis acidification zone 13 to flow into the anaerobic zone 141, the bottom surface of the hydrolysis acidification zone 13 is heightened to be positioned above the bottom surface of the anaerobic zone 141, and a height difference exists between the two bottom surfaces, so that the sewage in the hydrolysis acidification zone 13 can be pressed into the anaerobic zone 141 by using water pressure.

Meanwhile, the second packing layer 24 is positioned below the bottom surface of the hydrolysis acidification zone 13, so that sewage flowing out of the hydrolysis acidification zone 13 can firstly flow into the second packing layer 24, and bacteria attached to the second packing layer 24 perform anaerobic treatment on the flowing sewage, thereby further reducing the concentration of pollutants in the wastewater.

Referring to fig. 2 and 3, in order to further improve the uniformity of sewage flowing into the anaerobic zone 141, a water distributor 3 is added in the anaerobic zone 141, the water distributor 3 is composed of a main pipe 31 and a branch pipe 32, and the main pipe 31 and the branch pipe 32 are both positioned between the second packing layer 24 and the air distributor 25. The main pipe 31 is provided with one end communicated with the partition 12 and the other end lapped on the inner wall of the tank body 11. The branch pipes 32 are divided into two groups, and a plurality of branch pipes are symmetrically arranged on two sides of the main pipe 31. One end of the branch pipe 32 is communicated with the main pipe 31, and the other end is also lapped on the inner wall of the tank body 11. The branch pipes 32 are provided with water distribution holes 33 for making the sewage flowing out of the hydrolysis acidification zone 13 flow into the anaerobic zone 141 uniformly.

The bacteria attached to the first packing layer 22 die gradually during the treatment process, then fall off from the first packing layer 22, and the fallen bacteria form precipitates which are finally accumulated on the bottom surface of the hydrolytic acidification zone 13, and the precipitates can influence the normal flow of the sewage on one hand and block the water distributor 3 on the other hand. In order to discharge the sediments, a sewage draining pipe 51 is arranged in the tank body 11, one end of the sewage draining pipe 51 is connected with the bottom surface of the hydrolysis acidification zone 13, and the other end of the sewage draining pipe 51 penetrates out of the side wall of the tank body 11. A waste pipe 51 is also provided with a waste valve 52 at the end which extends out of the tank 11.

Further, the bottom surface of the hydrolysis acidification zone 13 is low in the middle and high in the periphery, and the communication position of the sewage discharge pipe 51 and the bottom surface of the hydrolysis acidification zone 13 is located at the lowest position of the bottom surface. This allows the precipitate precipitated on the bottom surface of the hydrolysis-acidification section 13 to flow downward and then to be discharged from the sewage drain 51.

Further, the water distribution holes 33 are directed toward the second packing layer 24, so that the sewage flowing out of the branch pipes 32 can flow into the second packing layer 24.

A third partition plate 27 is also installed in the aerobic zone 142, and the third partition plate 27 is fixed on the inner wall of the tank 11 and positioned above the gas distributor 25. Below the third partition 27 is a third packing layer 28, the density of the third packing layer 28 being less than the density of the liquid in the tank 11, and floating below the third partition 27 during treatment.

The third packing layer 28 serves to provide a bed for aerobic bacteria to stably exist in the aerobic zone 142.

Referring to fig. 2, after hydrolytic acidification, anaerobic treatment and aerobic treatment, the concentration of pollutants in the sewage is further reduced, but peculiar smell and color still exist, so that a secondary gas distributor 4 is additionally arranged in the aerobic zone 142, the secondary gas distributor 4 is positioned above the third partition plate 27 and consists of a bracket 41 on the inner wall of the tank body 11 and an aeration pipe 42 coiled on the bracket 41, and one end of the aeration pipe 42 extends out of the side wall of the tank body 11 and is connected with an external ozone generator for injecting ozone into the aerobic zone 142.

Ozone has strong oxidizing property, can further oxidize sewage, decolorizes and sterilizes the sewage, and can reduce the chemical oxygen demand of the sewage and further improve the water quality of the sewage.

Referring to fig. 2 and 4, the treated sewage contains villi, which can be treated by hydrolytic acidification, anaerobic treatment and aerobic treatment, but the treatment time is longer, and the loads of the hydrolytic acidification zone 13 and the oxidation zone 14 are also larger, so that a sewage tank 61 is added on the top surface of the tank body 11, the sewage tank 61 is communicated with the hydrolytic acidification zone 13, and the sewage flows into the sewage tank 61 and then enters the hydrolytic acidification zone 13.

The grid 62 is installed in the sewage tank 61, the grid 62 is obliquely arranged and is fixedly connected with the side wall and the bottom surface of the sewage tank 61 respectively, and the communicated part of the sewage tank 61 and the hydrolysis acidification zone 13 is positioned below the grid 62.

The equipartition has barb 63 on the upper surface of graticule mesh 62, and sewage flows through graticule mesh 62's in-process, and barb 63 can be lived the fine hair interception in the sewage, avoids it to flow into in the hydrolytic acidification district 13.

Further, the top of the barb 63 is inclined toward the higher side of the grid 62, so that the interception function of the barb 63 can be improved, and the fluff hung on the barb 63 is prevented from being washed down by fluctuating water flow.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. A wastewater treatment system, comprising:

a tank body (11);

the partition plate (12) is vertically arranged in the tank body (11) and divides the space in the tank body (11) into a hydrolysis acidification zone (13) and an oxidation zone (14), and the oxidation zone (14) is divided into an anaerobic zone (141) and an aerobic zone (142) from bottom to top;

a plurality of first partition plates (21) which are arranged on the inner wall of the tank body (11) from top to bottom at intervals and are positioned in the hydrolysis acidification zone (13);

the first filler layer (22) is arranged right below the first partition plate (21), and the density of the first filler layer is smaller than that of the liquid in the tank body (11);

the second partition plate (23) is arranged on the inner wall of the tank body (11) and is positioned in the anaerobic zone (141);

the second filler layer (24) is arranged right below the second clapboard (23), and the density of the second filler layer is greater than that of the liquid in the tank body (11);

the air distributor (25) is arranged in the tank body (11), is positioned in the aerobic zone (142), and is used for conveying air into the aerobic zone (142); and

a drain pipe (26) arranged in the tank body (11) and communicated with the aerobic zone (142);

wherein, the hydrolysis acidification zone (13) is communicated with the anaerobic zone (141), the liquid in the hydrolysis acidification zone (13) flows from top to bottom, and the liquid in the oxidation zone (14) flows from bottom to top.

2. The wastewater treatment system according to claim 1, wherein: the bottom surface of the hydrolysis acidification zone (13) is positioned above the bottom surface of the anaerobic zone (141);

the second filler layer (24) is positioned below the bottom surface of the hydrolytic acidification zone (13).

3. The wastewater treatment system according to claim 2, wherein: also comprises a water distributor (3) arranged in the anaerobic zone (141);

the water distributor (3) comprises a main pipeline (31) connected with the partition plate (12), branch pipelines (32) symmetrically arranged at two sides of the main pipeline (31) and water distribution holes (33) uniformly distributed on the branch pipelines (32);

the main pipeline (31) and the branch pipeline (32) are positioned between the second packing layer (24) and the gas distributor (25).

4. A wastewater treatment system according to claim 3, characterized in that: the water distribution holes (33) face the second packing layer (24).

5. The wastewater treatment system according to claim 1, wherein: a third partition plate (27) is arranged on the inner wall of the tank body (11), and the third partition plate (27) is positioned in the aerobic zone (142) and above the gas distributor (25);

a third packing layer (28) is arranged below the third clapboard (27), and the density of the third packing layer (28) is less than that of the liquid in the tank body (11).

6. The wastewater treatment system according to claim 5, wherein: also comprises a secondary gas distributor (4) used for injecting ozone into the aerobic zone (142);

the secondary air distributor (4) comprises a bracket (41) arranged on the inner wall of the tank body (11) and an aeration pipe (42) coiled on the bracket (41);

the secondary air distributor (4) is positioned above the third clapboard (27).

7. A wastewater treatment system according to claim 1 or 3, characterized in that: also comprises a sewage discharge pipe (51) connected with the bottom surface of the hydrolysis acidification zone (13) and a sewage discharge valve (52) arranged on the sewage discharge pipe (51).

8. The wastewater treatment system according to claim 7, wherein: the middle of the bottom surface of the hydrolytic acidification zone (13) is low, and the periphery of the bottom surface of the hydrolytic acidification zone is high;

the communication position of the sewage discharge pipe (51) and the bottom surface of the hydrolysis acidification zone (13) is positioned at the lowest position of the bottom surface.

9. The wastewater treatment system according to any of claims 1-8, further comprising:

the sewage tank (61) is arranged on the top surface of the tank body (11) and is communicated with the hydrolysis acidification zone (13);

the grid net (62) is obliquely arranged in the sewage pool (61) and is connected with the inner wall and the bottom surface of the sewage pool (61); and

barbs (63) are uniformly distributed on the upper surface of the grid (62).

10. The wastewater treatment system according to claim 9, wherein: the top of the barb (63) inclines to the higher side of the grid (62).